6又8/17×2/23+3/17×9/23 78÷78又78/79
来源：学生作业帮助网 编辑：六六作业网 时间：2024/12/20 06:47:03
6又8/17×2/23+3/17×9/2378÷78又78/796又8/17×2/23+3/17×9/2378÷78又78/796又8/17×2/23+3/17×9/2378÷78又78/79110/
6又8/17×2/23+3/17×9/23 78÷78又78/79
6又8/17×2/23+3/17×9/23 78÷78又78/79
6又8/17×2/23+3/17×9/23 78÷78又78/79
110/17×2/23+3/17×9/23
=(220+27)/(17*23)
=247/391
78÷(6240/79)
=78*79/6240
=0.9875
247/391
79/80